DOI QR코드

DOI QR Code

선형절삭시험에 의한 슬림 코니컬커터의 절삭성능 평가(I): Attack Angle 변화에 의한 결과

Performance estimation of conical picks with slim design by the linear cutting test (I): depending on attack angle variation

  • 최순욱 (한국건설기술연구원 SOC성능연구소 Geo-인프라연구실) ;
  • 장수호 (한국건설기술연구원 SOC성능연구소 Geo-인프라연구실) ;
  • 박영택 (한국건설기술연구원 SOC성능연구소 Geo-인프라연구실) ;
  • 이규필 (한국건설기술연구원 SOC성능연구소 Geo-인프라연구실)
  • Choi, Soon-Wook (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Chang, Soo-Ho (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Park, Young-Taek (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Lee, Gyu-Phil (Geotechnical Engineering Research Division, Korea Institute of Construction Technology)
  • 투고 : 2014.11.13
  • 심사 : 2014.11.24
  • 발행 : 2014.11.28

초록

본 연구에서는 로드헤더 커팅헤드 설계의 기본 사항인 절삭조건에 따른 커터작용력의 변화를 살펴보는 기초 연구를 진행하기 위하여 연암 및 보통암을 대상으로 하는 슬림 코니컬커터를 사용하여 받음각과 커터관입깊이, 커터간격의 조건에 따른 선형절삭시험을 수행하였다. 각 시험조건에서 커터작용력인 연직력, 절삭력, 구동력을 측정하였고 그 측정결과의 평균값을 사용하여 분석을 실시하였다. S/d비와 비에너지의 관계, 관입깊이와 비에너지의 관계, S/d비와 커터작용력의 관계로부터 받음각이 $50^{\circ}$, 커터간격이 12 mm, 커터관입깊이가 9 mm인 조건이 모르타르시험체에 대한 최적의 절삭조건임을 확인할 수 있었다. 특히 받음각이 $50^{\circ}$인 경우가 $45^{\circ}$인 경우에 비해 장비사양 설계를 위해 더 효과적임을 알 수 있었다.

In this study, the variations of cutter acting forces depending on cutting conditions were examined to obtain basic data for roadheader cutting head design. The linear cutting tests were performed in the condition of different attack angles, penetration depths, cutter spacings by using a slim conical pick for the light cutting condition. Cutter acting forces were measured by 3-directional load cell under different test conditions, and the analysis for cutting performance were carried out after calculating average values of the measured results. It is confirmed that the optimal cutting condition for the mortar specimen is the 50 degree attack angle, the cutter spacing of 12 mm, the cutting depth of 9 mm which are obtained from the analysis results. In addition, 50 degree attack angle is more effective than 45 degree attack angle to design optimal specifications of cutting head.

키워드

참고문헌

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피인용 문헌

  1. Cutting head attachment design for improving the performance by using multibody dynamic analysis vol.17, pp.3, 2016, https://doi.org/10.1007/s12541-016-0046-4
  2. A new linear cutting machine for assessing the rock-cutting performance of a pick cutter vol.88, 2016, https://doi.org/10.1016/j.ijrmms.2016.07.021
  3. Performance estimation depending on the insert size of conical picks by linear cutting test vol.18, pp.2, 2016, https://doi.org/10.9711/KTAJ.2016.18.2.221
  4. Automation for Pick Arrangement Design of a Cutting Head Attachment Using RecurDyn/ProcessNet vol.40, pp.7, 2016, https://doi.org/10.3795/KSME-A.2016.40.7.685
  5. A pick force calculation method suggested for tool lacing of mechanical excavators employing drag tools 2017, https://doi.org/10.1080/17480930.2017.1317946
  6. Performance Evaluation of Conical Picks for Roadheader in Copper Mines vol.25, pp.6, 2015, https://doi.org/10.7474/TUS.2015.25.6.496